2.1 lost root

Ok so I rooted my droid and went to 2.1. I was attempted to edit the boot animation through terminal and keep getting a permission denied. I checked the applications and the super user icon is gone. Is there an easy way to get root back on 2.1. I used the instructions listed here
If I am missing something easy please let me know. I'm a noob to all of this.

which 2.1 ROM did you use? Because some of them are already rooted, and some arent, from what Ive dabbled around with...you should really try Sholes new 1.2 edition....its truly greatness lol, it has root and tether and all kinds of goodies! You can use it and SetCPU to overclock and save your battery....I just overclocked mine to 1ghz and its AMAZINGLY FAST, and snappy...

which 2.1 ROM did you use? Because some of them are already rooted, and some arent, from what Ive dabbled around with...you should really try Sholes new 1.2 edition....its truly greatness lol, it has root and tether and all kinds of goodies! You can use it and SetCPU to overclock and save your battery....I just overclocked mine to 1ghz and its AMAZINGLY FAST, and snappy...

I used the HC 2.1 su droid boot. I was looking at the 1.2 edition as you sugguested. I have to install sprecovery 0.99.2 i have .1 when I run the adb shell for cd /d %userprofile%/desktop the prompt alwasy comes back to sys/kernel/debug. Any suggestions?

which 2.1 ROM did you use? Because some of them are already rooted, and some arent, from what Ive dabbled around with...you should really try Sholes new 1.2 edition....its truly greatness lol, it has root and tether and all kinds of goodies! You can use it and SetCPU to overclock and save your battery....I just overclocked mine to 1ghz and its AMAZINGLY FAST, and snappy...